UPD78F1144AGB-GAH-AX Renesas Electronics America, UPD78F1144AGB-GAH-AX Datasheet - Page 634

• Manufacturer Part Number: UPD78F1144AGB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1144AGB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

632
Address: FFFA9H
Symbol
Notes 1.
LVIM
2.
3.
LVION
LVISEL
LVIMD
LVION
LVIF
The reset value changes depending on the reset source and the setting of the option byte.
This register is not cleared (00H) by LVI reset.
It is set to “82H” when a reset signal other than LVI is applied if option byte LVIOFF = 0, and to “00H”
if option byte LVIOFF = 1.
Bit 0 is read-only.
LVION, LVIMD, and LVISEL are cleared to 0 in the case of a reset other than an LVI reset. These
are not cleared to 0 in the case of an LVI reset.
<7>
0
1
0
1
0
1
0
1
Notes 3, 4
Note 3
Note 3
After reset: 00H
Disables operation
Enables operation
Detects level of supply voltage (V
Detects level of input voltage from external input pin (EXLVI)
• LVISEL = 0: Generates an internal interrupt signal when the supply voltage (V
• LVISEL = 1: Generates an interrupt signal when the input voltage from an external
• LVISEL = 0: Generates an internal reset signal when the supply voltage (V
• LVISEL = 1: Generates an internal reset signal when the input voltage from an
• LVISEL = 0: Supply voltage (V
• LVISEL = 1: Input voltage from external input pin (EXLVI) ≥ detection voltage (V
• LVISEL = 0: Supply voltage (V
• LVISEL = 1: Input voltage from external input pin (EXLVI) < detection voltage (V
Figure 20-2. Format of Low-Voltage Detection Register (LVIM)
6
0
Low-voltage detection operation mode (interrupt/reset) selection
Note 1
CHAPTER 20 LOW-VOLTAGE DETECTOR
lower than the detection voltage (V
V
input pin (EXLVI) drops lower than the detection voltage (V
V
detection voltage (V
external input pin (EXLVI) < detection voltage (V
reset signal when EXLVI ≥ V
disabled
or when LVI operation is disabled
LVI
EXLVI
5
0
or higher (V
) or when EXLVI becomes V
R/W
User’s Manual U17854EJ9V0UD
Enables low-voltage detection operation
Note 2
4
0
Voltage detection selection
DD
Low-voltage detection flag
DD
DD
DD
≥ V
) ≥ detection voltage (V
) < detection voltage (V
LVI
)
) and releases the reset signal when V
LVI
).
EXLVI
3
0
.
EXLVI
LVI
) (V
or higher (EXLVI ≥ V
LVISEL
DD
<2>
LVI
LVI
< V
), or when LVI operation is
)
LVI
EXLVI
) or when V
LVIMD
) and releases the
<1>
EXLVI
EXLVI
DD
DD
DD
) (EXLVI <
becomes
).
≥ V
) <
DD
LVIF
<0>
LVI
EXLVI
) drops
EXLVI
.
),
)